Hi Ted!
lv2-dev and the other dependencies are installed, I compile several lv2
plugins by myself and they are working fine e.g. in Reaper.
You are correct, "cmake --log-level=VERBOSE .." reports exactly what you
wrote: "LV2_INCLUDE_DIRS is '' ".
I will try to get proper information searching the web. At least for me
that is not a great problem at the moment. I can stay with 25.12 and
soon I plan to update to Debian 13 anyway, maybe this behaviour will
disappear magically :-)
Thank you for your efforts to guide!
Greetings, Michael
Am 08.01.26 um 21:44 schrieb Ted Felix:
If "sudo apt install lv2-dev" didn't help...
I've added some verbose logging. Grab the latest from git and try
this from your build directory:
cmake --log-level=VERBOSE ..
You should see the following in the output after it checks for lv2:
-- LV2_FOUND: '1'
-- LV2_INCLUDE_DIRS: '/usr/include'
-- LV2_LIBRARY_DIRS: ''
I'm guessing you are going to see LV2_INCLUDE_DIRS is ''. If so,
something might be wrong with your lv2 package configuration.
Ted.
On 1/8/26 2:22 PM, Ted Felix wrote:
That's really strange because above it indicates that lv2 1.18.10
is indeed available:
-- Checking for module 'lv2>=1.18.0'
-- Found lv2, version 1.18.10
And your 25.12 builds fine.
Try this:
sudo apt install lv2-dev
Not sure it will help. Let us know how it goes. I'll keep
digging into how this can happen with cmake.
Ted.
On 1/8/26 9:34 AM, Babarosa wrote:
Hi there!
The use of lv2 is disabled because of
"Failed to find lv2 headers for lv2 plugins"
I searched and did not find out where to get these headers from ...
Greetings, Michael
Am 08.01.26 um 04:51 schrieb Ted Felix:
On 1/7/26 5:05 PM, Babarosa wrote:
Hi there!
Thank you for your quick answer.
1.)
I built v25.12 again and everything works as expected.
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babarosa@MacBookPro:~/rosegarden-/build$ cmake --log-level=VERBOSE ..
-- The C compiler identification is GNU 12.2.0
-- The CXX compiler identification is GNU 12.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found PkgConfig: /usr/bin/pkg-config (found version "1.8.1")
-- Checking for module 'alsa>=0.9'
-- Found alsa, version 1.2.8
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.2.13")
-- Checking for module 'liblo>=0.7'
-- Found liblo, version 0.31
-- Checking for module 'lrdf>=0.2'
-- Found lrdf, version 0.5.0
-- Checking for module 'fftw3f>=3.0.0'
-- Found fftw3f, version 3.3.10
-- Checking for module 'samplerate>=0.1.2'
-- Found samplerate, version 0.2.2
-- Checking for module 'sndfile>=1.0.16'
-- Found sndfile, version 1.2.0
-- Checking for module 'jack'
-- Found jack, version 1.9.21
-- Checking for module 'lilv-0'
-- Found lilv-0, version 0.24.14
-- Checking for module 'lv2>=1.18.0'
-- Found lv2, version 1.18.10
-- LV2_FOUND: '1'
-- LV2_INCLUDE_DIRS: ''
-- LV2_LIBRARY_DIRS: ''
CMake Warning at CMakeLists.txt:234 (message):
Failed to find lv2 headers for lv2 plugins
-- The following features have been enabled:
* ALSA, Alsa library (Advanced Linux Sound Architecture), used for MIDI support
* SNDFILE, Better support for WAV files
* JACK, Library for accessing the JACK server (http://jackaudio.org).
* LIRCCLIENT, The LIRC client library, for remote control support
-- The following REQUIRED packages have been found:
* PkgConfig
* Qt5Core
* Qt5Gui
* Qt5Widgets
* Qt5Xml
* Qt5Network
* Qt5PrintSupport
* Qt5Test
* Qt5 (required version >= 5.1.0)
* ZLIB
-- The following features have been disabled:
* LILV, The Lilv library, for lv2 plugins
-- Not building unit tests, using a static library for rosegarden
-- Found GTK2_GTK: /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so
-- Found SharedMimeInfo: /usr/bin/update-mime-database (found suitable version
"2.2", minimum required is "0.50")
-- Configuring done
-- Generating done
-- Build files have been written to: /home/babarosa/rosegarden-/build
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